(a) Find response of the underdamped spring-mass system excited by step force F0. Use convolution integral and complex algebra.
(b) Find steady state value of the response.
(c) Write down a limit of the response in case  is zero.
(d) Write down convolution integrals for step force function for critically damped and overdamped systems.

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An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)

The release of energy by the nucleus of atom as a result of nuclear fission is radiant energy true false